Mixer valve of an internal combustion engine

Patent metadata

Field	Value
Publication number	US-2016195043-A1
Application number	US-201414915846-A
Country	US
Kind code	A1
Filing date	Jul 23, 2014
Priority date	Sep 2, 2013
Publication date	Jul 7, 2016
Grant date	—

Abstract

A mixer valve of an internal combustion engine of a motor vehicle includes a single servo-motor and a differential. A flap arranged in an intake port and a flap arranged in a exhaust duct are driven by a differential. Spring elements tension the flaps in a base position counter to the stops and determine which of the flaps is driven in which control area of the servo-motor.

First claim

1 - 7 . (canceled)

8 . A mixer valve ( 6 ) of an internal combustion engine ( 1 ) of a motor vehicle, the mixer valve ( 6 ) comprising:
an intake duct ( 4 ); an exhaust gas duct ( 5 ); a common collector duct ( 7 ), the intake duct ( 4 ) and the exhaust gas duct ( 5 ) opening into the common collector duct ( 7 ); a first flap ( 13 ) arranged in the intake duct ( 4 ); a second flap ( 14 ) arranged in the exhaust gas duct ( 5 ); a first rotatably mounted shaft ( 11 ) holding the first flap ( 13 ); a second rotatably mounted shaft ( 12 ) holding the second flap ( 14 ); and a drive device ( 8 ) configured to drive the first and second flaps ( 13 , 14 ), the drive device ( 8 ) having a single actuating motor ( 9 ) and a gear mechanism ( 15 ) configured to actuate the first and second flaps ( 13 , 14 ), wherein the gear mechanism ( 15 ) has a differential gear mechanism ( 16 ), and the differential gear mechanism ( 16 ) is arranged between the first and second rotatably mounted shafts ( 11 , 12 ).

9 . The mixer valve as claimed in claim 8 , wherein at least one of the first and second rotatably mounted shafts ( 11 , 12 ) is prestressed into a basic position by a spring element.

10 . The mixer valve as claimed in claim 9 , wherein the first flap ( 13 ) is prestressed into an open position against a stop.

11 . The mixer valve as claimed in claim 10 , wherein the second flap ( 14 ) is prestressed into a closed position against a stop.

12 . The mixer valve as claimed in claim 11 , wherein the second flap ( 14 ) has a second stop in an open position.

13 . The mixer valve as claimed in claim 9 , wherein both of the first and second rotatably mounted shafts ( 11 , 12 ) are prestressed into a basic position by respective first and second spring elements, wherein the first spring element has a greater spring stiffness than the second spring element.

14 . The mixer valve as claimed in claim 8 , wherein the exhaust gas duct has a greater flow resistance than the intake duct.

Assignees

• Continental Automotive Gmbh

Inventors

• Muresan Daniel

Classifications

• F02M26/64

  the EGR valve being operated together with an intake air throttle · CPC title

• F02M26/54

  Rotary actuators, e.g. step motors · CPC title

• F02M26/51 Primary

  EGR valves combined with other devices, e.g. with intake valves or compressors (combined with intake air throttles F02M26/64) · CPC title

• F02M26/21

  with EGR valves located at or near the connection to the intake system · CPC title

• F02M26/52

  Systems for actuating EGR valves · CPC title